Salmon Crunch Pie

• 3 eggs
• 1 filling
• 300 gr salmon
• 190 gr flour
• 180 ml sour cream
• 120 gr cheese swiss (grated)
• 110 gr cheese cheddar
• 95 gr shortening
• 60 gr walnuts (finely chopped)
• 60 gr onion (finely chopped)